Air diffuser for a mechanically sealed pump



FIG. 1 is a rear perspective view of an air diffuser for a mechanically sealed pump showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a side elevation view thereof;

FIG. 4 is a front perspective view thereof;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a rear perspective view of a second embodiment of an air diffuser for a mechanically sealed pump showing my new design, the remaining views being the same as FIGS. 3-5. 

CLAIM The ornamental design for an air diffuser for a mechanically sealed pump, as shown and described. 